Straight-way valve



(vNoiModel.)

A. B BUEN-EY.. STRAIGHTWAY VALVE.

Patented Aug. 22, 188.2l

//l i {IgM/enfer UNITED STATES PATENT EETCE.

ALEXANDER B. ROHNEY, OF CINCINNATI, OHIO.

STRAIGHT-WAY VALVE.

SPECIFICATION forming part of Letters Patent No. 262,985, dated .August22, 1882.

Application tiled May 27,1882. (No model.) l

ll'o all whom it may concern Be it known that I, ALEXANDER B. ROH- NEY,ot' Cincinnati, Hamilton county, Ohio, have invented certain pew anduseful Improvements in Straight-Thy Valves, ot' which the following is aspecification.

The object of myV invention is to provide a straight-way valve forcontrolling the ow of uids through pipes, which valve shall be cheap andsimple in construction, edicient in operaion, and not liable to get outof order.

Referring to the drawings forming part of `l this specification, Figure1 represents a central Ass.

longitudinal section of a valve and valve-box embodying my invention.Fig. 2 is a topview 'of the valve-box, the cap being removed and theoperating-spindle being in section. Fig. 3 is a to'p view, lookingdirectly into the valvebox. Fig. 4 represents one ot' the gates of thevalve, and- Fig. 5 represents the cam-ring by the aid of which the gatesofthe valve are operated.

A is the v. ive-box, into the ends a of which may be screwedor-otherwise secured the ends of the pipes through which the uids are topass. ln the center of this valve-box is the circular chamber A', inwhich the valve is located. This valve consists of the two gates B, theconvex surfaces ot' which correspond in curvature to the inner surfaceof the chamber A. The concave or inner face of each of these gates isprovided with a channel, b, preferably formed by the two ridges b'.These gates are located within the chamber A', and when in the positionshown in Fig. 3 the fluid is allowed to pass freely through thevalve-box, but when the gates are turned to a point at right anglestothe position they occupy in Fig. 3 they occupy the position shown bydotted lines in Fig. 2, and the uid is then prevented from passingthrough the valve.

When the gates are in the valve-box a cam,`

C, is placed between them, the edges of the cam being in the channels b.This cam is pro# vided with an opening, d, preferably of an equaldiameter to the inlet and outlet openings a'.' This cam C is providedwith an arm, D.

A cap, E, is screwed onto the valve-box, which closes the top of thechamber A', and through this cap passes the valve-spindle F, which isoperated by hand-wheel or other device, F.

Any suitable connection between the valvespindle and the cam-ring may beemployed. A preferred means is as follows: The lower end of thisvalve-spindle is forked, forming a yoke, c, into which the edge of thecam C fits when the parts are in position, and by which the cam and thegates B are turned.

Between the cap E and the upper end ofthe chamber A' is a cam-plate, G,which is provided with a ange, g, fitting into said chamber, and whenthe cap is screwed into position this cam-plate is tirml y clamped. Inthis camplate is an opening or curved slot, H, one end of which is nearthe center of the plate, the other end being nearer the periphery of theplate, as shown in Fig. 2, and into this slot is placed the end of thearm D of the cam C. This camCis of the shape shown, so that when it isin position in the valve-box A and between the two gates B, if the arm Dis moved away from the valve-stem F, the cam will have a tendency tospread the gatesthat is, cause them to iit more tightly against theinner surface of the chamber A.

The purpose of the cam-plate G is to cause the cam C t-o be turned inthe direction of its periphery when the passage through the valve is tobe closed, so as to cause the gates B to fit tightly against the innerwall of the chamber A' when the said gates are to close the openings a'.To accomplish this the plate is turned before the cap E is screwed on,so that the end ot' the slot H which is farthest away from the centerot' the plate shall be in a line with the passage through the valve, asshown in Fig. 2.

When the passage-way through the valve is open the cam C stands at rightangles to the length ofthe valve-box A, occupying the position shown inFig. 3. In this position the arm D of the cam is in the end ot' the slotH which is nearest to the center of the plate Gr, and the gates B arenot therefore caused to lit very tightly against the inner face of thechamber A'. When, now, it is desired to close the passage through thevalve-box, the valve-stem F is turned, and this, in consequence of the'yoke e engaging the cam C, causes said cam to be turned, which in turncauses the gates B to be moved around in the chamber A' until they C isturned the arm D moves around in the curved slotH, constantly movingfarther away from the valve-stem F, and in this manner the pressureagainst the gates B is constantly iucreased as the cam and gates areturned, until when the gates have closed the openings a.' the gates arecaused to press so tightly against the inner face ofthe chamber A thatno Huid can escape. When the passage-way is to be opened the valve-stemis turned in au opposite direction, and the arm D moving in the slot H.and toward the valve-stem, the pressure ot' the cam C is removed fromthe gates B, and they may thus be easily turned.

These valves, constructed after the above plan, are very simple, and maybe employed in connection with steam-pipes, gaspipes,water pipes, or anyother pipes through which iiuid of any description is to pass.

What I claim as new and of my invention, and desire to secure by LettersPatent, is-

1.. In a valve-box, the combination of the gates B and the cam-ringlocated between and holding` apart said gates, and means for turning thesaid cam-ring axially and also iu the plane of a circle Whose axis issubstantially at right angles to the axis of the ring, substantially asand for the purposes specified.

2. In a valve-box, the combination of the gates B and the cam-ringlocated between said gates, and means for turning the said cam-ringaxially and also in the plane of a circle whose axis is substantially atright angles to the axis of the ring, substantially as and for thepurposes specied.

3. The combination of the valve-box A, the gates B, and the cam-ring C,and means for turning said cam-ring and gates, substantially as and forthe purposes specified.

4.. The combination of the valve-box A, the gates B, and the cam-ring C,and the means for turning said cam-ring in the plane of a circle whoseaxis is substantially at right angles v passages a',

to the axis of the ring, and the stem F, Provided With yoke c, adaptedto fit over and engage the camrin g, substantially as and for thcpurposes specified. Y

5. In a valve-box, A, the combination of the gates B, provided with thechannels b and the cam-ring whose periphery lits into said channels, andmeans for turning the said cam-ring axially and also in the plane of acircle whose axis is substantially at right angles to the axis ofthe'ring, substantially as and for the purposes specified.

6. In a valve-box, the combination of the gates and the cam-ringprovided with orilice d, furnishing a water-way when the valve is open,the said cam-ring located between said gates, and means for operatingsaid ring so as to open and close the valvev and tighten the gatesagainst the valve-chamber when the valve is closed, substantially as andfor the purposes specified.

7. The valve-box A, having chamber A and and the cap E, iu combinationwith the gates B, cam-ring (l, provided with arm D, and the cam-plate G,provided with curved slot H, and means for turning said camring andgates, substantially as and for the purposes specified.

8. The valve-box A, constructed substantially as described, and providedwith a cap, E, through which passes the valve-stem F, in combinationwith the cam-ring G, provided with arm D, an d the gates B, and thecam-plate G, having curved slot H, said plate being clamped between thecap E and the valve-box, the arm D of the cam-ring being located in saidcurved slot, substantially as and for the 8o purposes specified.

ALEXANDER. B. ltOHN EY.

Witnesses:

WM. E. J oNEs, E. R. HILL.

